CN201203775Y - Standby control circuit - Google Patents
Standby control circuit Download PDFInfo
- Publication number
- CN201203775Y CN201203775Y CNU2008200241690U CN200820024169U CN201203775Y CN 201203775 Y CN201203775 Y CN 201203775Y CN U2008200241690 U CNU2008200241690 U CN U2008200241690U CN 200820024169 U CN200820024169 U CN 200820024169U CN 201203775 Y CN201203775 Y CN 201203775Y
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- circuit
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- standby
- control circuit
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Abstract
The utility model discloses a stand-by control circuit, comprising a main processor on a main-board, a main power and a stand-by power. The main-board is powered by the main power at available machine state and by the stand-by power at stand-by state. The stand-by control circuit also comprises a control signal input terminal and a first switch circuit and a second switch circuit, wherein the control terminal of the first switch circuit is connected with the control signal input terminal and the output terminal of the first switch circuit is connected with the second switch circuit; and the second switch circuit is connected between the first switch circuit and the main power. The structure of the stand-by control circuit is simple and the cost thereof is low, and the main power for supplying power to the main-board is turned off under the effect of stand-by control signal, thereby realizing the real stand-by to effectively reduce the power loss and damage to component at false stand-by state, so as to increase the service life of complete machine to increase the market competition of products at cost and performance aspect.
Description
Technical field
The utility model relates to a kind of control circuit, specifically, relates to a kind of readiness control circuit of under standby or open state power supply being controlled.
Background technology
The standby of electric equipments such as set-top box is divided into true standby and two kinds of situations of false standby, and true standby is that finger processor has been exported the standby command signal, and primary power cuts out the most of power supply into main board power supply, realizes low-power consumption standby; Though false standby is meant processor and has exported the standby command signal that because interface circuit, on-off circuit or line-scan circuit have problem, and can not close primary power, each functional module of mainboard still is in the state of working on power.At present, for the consideration of cost aspect, set-top box is all selected false standby.Under holding state, set-top box is just closed audio frequency and video output, and motherboard power supply is still powered, and the complete machine other parts still are in duty.If the user uses idle function for a long time, not only cause a large amount of losses of mainboard power, waste energy, and, damage components and parts easily, thereby influence the serviceable life of complete machine because each circuit of mainboard is in running order for a long time.
Summary of the invention
The utility model is thereby that false standby causes power attenuation big and influence the components and parts problem in serviceable life at set-top box in the prior art, a kind of readiness control circuit is provided, pass through simple circuit configuration, can realize the true standby of set-top box, reduce circuit power consumption, improve the serviceable life of product.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of readiness control circuit, comprise the primary processor, primary power and the standby power that are arranged on the mainboard, described mainboard is powered by primary power under open state, when holding state, power by standby power, it is characterized in that, described readiness control circuit also comprises signal input end, is used for receiving the control signal of primary processor output; Also comprise first on-off circuit and second switch circuit, the control end of first on-off circuit connects described signal input end, and the output terminal of first on-off circuit is connected with the second switch circuit; Described second switch circuit is connected between first on-off circuit and the primary power; Described readiness control circuit is controlled the turn-on and turn-off of first on-off circuit and second switch circuit according to the control signal of primary processor output, and then controls the conducting and the shutoff of primary power.
Further, described first on-off circuit comprises a NPN type triode, and described second switch circuit comprises a relay; The base stage of described triode connects described signal input end, the grounded emitter of triode; The coil of described relay is connected between the collector and primary power of triode, and the electric shock switch series of relay is associated in the circuit that primary power is a main board power supply.
Further, described relay coil two ends are parallel with diode, and coil is carried out current-limiting protection; The positive pole of described diode is connected with the collector of described triode.
Again further, described primary power is the out-put supply on the power panel; Described standby power can the time out-put supply on the power panel, also can be battery.
In order to reduce taking and simplifying software program design of primary processor I/O mouth, described readiness control circuit also comprises a microprocessor, the input end of described microprocessor links to each other with the control signal output ends of primary processor, and the output terminal of described microprocessor is connected with described signal input end.
Again further, described control signal can be remote-controlled start-up signal or remote control standby signal; Described primary processor comprises a remote-control receiving circuit, and this remote-control receiving circuit receives described remote-controlled start-up or standby signal and it is transferred to described microprocessor.Described control signal also can be keypad starting-up signal or keypad standby signal; Described primary processor comprises a button receiving circuit, and this button receiving circuit receives described keypad start or standby signal and it is transferred to described microprocessor.In addition, described control signal can also be timing clock signal; Described primary processor comprises a timer clock circuit, and this timer clock circuit produces timing start-up or timing standby signal and it is transferred to described microprocessor.
In addition, described signal input end and primary power feed circuit are realized reliable ground by filter capacitor respectively.
Compared with prior art, advantage of the present utility model and good effect are: readiness control circuit of the present utility model is simple in structure, cost is lower, under the effect of Opportunity awaiting control for linear signal, really be cut to the primary power of main board power supply, realize standby truly, efficiently solve the loss of power under the false holding state and, improved the serviceable life of complete machine, thereby strengthened the market competitiveness of product at cost and aspect of performance to the infringement of components and parts.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of the utility model readiness control circuit;
Fig. 2 is the circuit theory diagrams of another embodiment of the utility model readiness control circuit.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The set-top box mainboard is provided with primary processor, and the course of work of whole set-top box is carried out integral body control.The set-top box power panel can be exported various direct supplys such as 12V, 5V, 3.3V, and most of power supply is a primary power, provides operating voltage to functional modules such as the primary processor on the mainboard, storeies under open state; And when set-top box standby, each power supply disconnects, and stops to each functional module power supply.When set-top box is in holding state, in order to receive the start-up command that telepilot or keypad send, realize the accurate startup of set-top box, need primary processor still in running order, at this moment the power supply for the primary processor power supply is referred to as standby power.Standby power can be the 5V power supply of power panel output, also can power to primary processor as standby power with battery.And the holding state of existing set-top box is false standby, promptly when set-top box standby, has just closed the audio frequency and video output circuit, and the power supply of powering for each functional module on the mainboard does not disconnect, and each functional module is still in running order.Therefore, owing to set-top box should standby not have standby, a large amount of power of meeting loss causes energy dissipation, and, because each components and parts in the set-top box are in running order always, thus the serviceable life of having reduced components and parts.Provide a kind of readiness control circuit based on above-mentioned technical matters utility model, can realize the real standby of set-top box.
Embodiment one: Figure 1 shows that the circuit theory diagrams of an embodiment of the readiness control circuit that the utility model proposes, embodiment is an example with the 12V power supply of power panel output.Among the figure, 12V-ROW is the 12V power supply primary power from power panel, and 12V connects corresponding feed circuit on the mainboard to the output terminal of mainboard, provides 12V direct supply to main board functional module.Described readiness control circuit comprises signal input end STC, and standby that primary processor sends or start control signal are by STC end input readiness control circuit.Comprise the double switch circuit in the readiness control circuit, wherein, first via on-off circuit comprises a NPN type triode Q7, and the base stage of triode Q7 is connected with signal input end STC by current-limiting resistance R23 on the one hand, on the one hand by filter capacitor C56 ground connection; The grounded emitter of triode Q7.Second path switching circuit comprises a relay J 1, and the coil of relay J 1 is connected between the collector of triode Q7 and the 12V power supply primary power 12V-ROW, and it is often opened in the feed circuit that electric shock K8 is connected on 12V power supply primary power.In addition, for protective relay J1 coil overcurrent, be parallel with a current-limiting protection diode D12 at described coil two ends, the positive pole of described diode D12 is connected on the collector of triode Q7.12V power supply primary power is by filter capacitor C57 reliable ground.
The course of work of above-mentioned readiness control circuit is as follows:
After the remote-control receiving circuit of primary processor receives the standby command that telepilot sends, the Opportunity awaiting control for linear signal of primary processor output low level also transfers to the signal input end STC of readiness control circuit, under the control of low level signal, triode Q7 ends, make relay J 1 dead electricity, often open electric shock K8 and disconnect, thereby be cut to the 12V power supply of main board power supply, need the functional module of 12V power supply to quit work in the mainboard, be in holding state.
Equally, after the button receiving circuit of primary processor receives the standby command that keypad sends, the Opportunity awaiting control for linear signal of primary processor output low level also transfers to the signal input end STC of readiness control circuit, under the control of low level signal, triode Q7 ends, and makes relay J 1 dead electricity, often opening electric shock K8 disconnects, thereby be cut to the 12V power supply of main board power supply, need the functional module of 12V power supply to quit work in the mainboard, be in holding state.
Except above-mentioned telepilot and keypad send the standby command, can also by the timer clock circuit in the primary processor stand-by time to after send standby command, primary processor sends the Opportunity awaiting control for linear signal then, be cut to the 12V power supply of main board power supply by readiness control circuit, realize the real standby of set-top box.
When the remote-control receiving circuit in the primary processor receive start-up command signal that telepilot sends, button receiving circuit in the primary processor receive start-up command that keypad sends or the on time in the timer clock circuit to and when sending start-up command, the Opportunity awaiting control for linear signal of a high level of primary processor output also transfers to the signal input end STC of readiness control circuit.Under the control of high level signal, triode Q7 conducting, relay J 1 gets electric, often opens electric shock K8 adhesive, is the 12V power supply of main board power supply thereby connect, and needs the functional module start operate as normal of 12V power supply in the mainboard.
In the above-mentioned course of work, diode D12 clock is in cut-off state, thereby plays the effect of current-limiting protection.
Embodiment two: the circuit theory diagrams that Figure 2 shows that another embodiment of the utility model readiness control circuit.In order to reduce taking of primary processor I/O mouth among the embodiment one, simplify the design of software program, the signal input end of this embodiment is connected with microprocessor U5.The input pin 3IR of microprocessor U5, input pin 4KYEY and input pin 5RTC are connected with primary processor, and the output pin 6 connection control signal input end STC of U5.
After the remote-control receiving circuit of primary processor received the standby command that telepilot sends, primary processor output standby command signal also transferred to the input pin 3 of microprocessor U5.At this moment, the output pin 6 of microprocessor U5 can be exported a low level standby signal to signal input end STC, thereby is cut to the 12V power supply of main board power supply, realizes the remote control standby of set-top box.And after remote-control receiving circuit receives the start-up command that telepilot sends, primary processor sends the start-up command signal and transfers to the input pin 3 of U5, the output pin 6 of U5 then can be exported a high level starting-up signal to signal input end STC, make to be the 12V power turn-on of main board power supply, need the functional module start operate as normal of 12V power supply in the mainboard.
After the button receiving circuit of primary processor received the standby command or start-up command that sends on the keypad, primary processor was exported standby command signal or start-up command signal and is transferred to the input pin 4 of microprocessor U5.The output pin 6 of microprocessor U5 can correspondingly be exported a low level standby signal or a high level starting-up signal to signal input end STC, and the conducting or the shutoff of control 12V power supply realize the button standby or the button start of set-top box.
And the timer clock circuit in primary processor is when sending standby command or start-up command, and primary processor output standby command signal or start-up command signal also transfers to the input pin 5 of microprocessor U5.Still correspondingly export a low level standby signal or a high level starting-up signal to signal input end STC at the output pin 6 of microprocessor U5, the conducting or the shutoff of control 12V power supply realize the timing standby or the timing start-up of set-top box.
The mode that embodiment two adopts hardware and software to combine realizes the standby or the start of set-top box, simplified the software flow design that simple dependence primary processor sends high-low level signal controlling readiness control circuit, and the taking of I/O of having reduced primary processor, help the function expansion of set-top box main processor system.
Certainly, the above only is a kind of preferred implementation of the present utility model.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1, a kind of readiness control circuit, comprise the primary processor, primary power and the standby power that are arranged on the mainboard, described mainboard is powered by primary power under open state, when holding state, power by standby power, it is characterized in that, described readiness control circuit also comprises signal input end, is used for receiving the control signal of primary processor output; Also comprise first on-off circuit and second switch circuit, the control end of first on-off circuit connects described signal input end, and the output terminal of first on-off circuit is connected with the second switch circuit; Described second switch circuit is connected between first on-off circuit and the primary power; Described readiness control circuit is controlled the turn-on and turn-off of first on-off circuit and second switch circuit according to the control signal of primary processor output, and then controls the conducting and the shutoff of primary power.
2, readiness control circuit according to claim 1 is characterized in that, described first on-off circuit comprises a NPN type triode, and described second switch circuit comprises a relay; The base stage of described triode connects described signal input end, the grounded emitter of triode; The coil of described relay is connected between the collector and primary power of triode, and the electric shock switch series of relay is associated in the circuit that primary power is a main board power supply.
3, readiness control circuit according to claim 2 is characterized in that, described relay coil two ends are parallel with diode, and the positive pole of described diode is connected with the collector of described triode.
4, readiness control circuit according to claim 1 is characterized in that, described primary power and standby power are the out-put supply on the power panel.
According to readiness control circuit according to claim 1, it is characterized in that 5, described standby power is a battery.
6, according to each described readiness control circuit in the claim 1 to 5, it is characterized in that, described readiness control circuit also comprises a microprocessor, the input end of described microprocessor links to each other with the control signal output ends of primary processor, and the output terminal of described microprocessor is connected with described signal input end.
7, readiness control circuit according to claim 6 is characterized in that, described control signal is remote-controlled start-up signal or remote control standby signal; Described primary processor comprises a remote-control receiving circuit, and this remote-control receiving circuit receives described remote-controlled start-up or standby signal and it is transferred to described microprocessor.
8, readiness control circuit according to claim 6 is characterized in that, described control signal is keypad starting-up signal or keypad standby signal; Described primary processor comprises a button receiving circuit, and this button receiving circuit receives described keypad start or standby signal and it is transferred to described microprocessor.
9, readiness control circuit according to claim 6 is characterized in that, described control signal is a timing clock signal; Described primary processor comprises a timer clock circuit, and this timer clock circuit produces timing start-up or timing standby signal and it is transferred to described microprocessor.
10, readiness control circuit according to claim 1 is characterized in that, described signal input end and primary power feed circuit are respectively by filter capacitor ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200241690U CN201203775Y (en) | 2008-06-10 | 2008-06-10 | Standby control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200241690U CN201203775Y (en) | 2008-06-10 | 2008-06-10 | Standby control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201203775Y true CN201203775Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200241690U Expired - Lifetime CN201203775Y (en) | 2008-06-10 | 2008-06-10 | Standby control circuit |
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| CN (1) | CN201203775Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541230A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Peripheral component interconnect-express (PCI-E) slot power supply circuit |
| CN104935842A (en) * | 2015-06-12 | 2015-09-23 | 深圳Tcl新技术有限公司 | Standby circuit, control method and television system of standby circuit |
| CN106200853A (en) * | 2016-07-02 | 2016-12-07 | 上海与德通讯技术有限公司 | A kind of wake-up circuit and awakening method |
| CN107358932A (en) * | 2017-09-14 | 2017-11-17 | 京东方科技集团股份有限公司 | A kind of power control circuit and method, display device |
| CN112735327A (en) * | 2020-12-31 | 2021-04-30 | 威创集团股份有限公司 | Power supply control circuit of LED all-in-one machine and LED all-in-one machine |
| CN114837980A (en) * | 2022-05-16 | 2022-08-02 | 深圳宝新创科技股份有限公司 | Fan control circuit, fan and electronic equipment |
-
2008
- 2008-06-10 CN CNU2008200241690U patent/CN201203775Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541230A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Peripheral component interconnect-express (PCI-E) slot power supply circuit |
| CN104935842A (en) * | 2015-06-12 | 2015-09-23 | 深圳Tcl新技术有限公司 | Standby circuit, control method and television system of standby circuit |
| CN104935842B (en) * | 2015-06-12 | 2019-04-16 | 深圳Tcl新技术有限公司 | The control method and television system of stand-by circuit, stand-by circuit |
| CN106200853A (en) * | 2016-07-02 | 2016-12-07 | 上海与德通讯技术有限公司 | A kind of wake-up circuit and awakening method |
| CN107358932A (en) * | 2017-09-14 | 2017-11-17 | 京东方科技集团股份有限公司 | A kind of power control circuit and method, display device |
| CN107358932B (en) * | 2017-09-14 | 2019-10-29 | 京东方科技集团股份有限公司 | A kind of power control circuit and method, display device |
| CN112735327A (en) * | 2020-12-31 | 2021-04-30 | 威创集团股份有限公司 | Power supply control circuit of LED all-in-one machine and LED all-in-one machine |
| CN114837980A (en) * | 2022-05-16 | 2022-08-02 | 深圳宝新创科技股份有限公司 | Fan control circuit, fan and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
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| CX01 | Expiry of patent term |